*, html, body{
    margin: 0;
    outline: 0;
    
    overflow: hidden;
}

table{
    width: 100%;
    text-align: center;
    
    color: white;
    font-size: 20px;
}

button{
	border-radius: 10px;
	background-color: white;
	border: 2px solid black;
	margin: 4px;
	padding: 6px;
	font-size: 22px;
    
    transition: 0.5s;
}

button:hover{
    transform: scale(1.1);
}

.toolbar{
    width: 100%;
    height: 10%;
    background-color: rgba(0, 0, 0, 0.5);
    
    position: fixed;
    left: 0;
    bottom: 0;
    
    color: white;
    font-size: 20px;
    
    z-index: 1;
    
    opacity: 0.3;
    transition: 0.5s;
    transition-timing-function: ease;
}

.toolbar:hover{
    opacity: 1;
    height: 250px;
}

.center{
    text-align: center;
}
